C
Chelo Ferreira
Researcher at University of Zaragoza
Publications - 55
Citations - 441
Chelo Ferreira is an academic researcher from University of Zaragoza. The author has contributed to research in topics: Asymptotic expansion & Asymptotic analysis. The author has an hindex of 11, co-authored 47 publications receiving 386 citations.
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Asymptotic expansions of the Hurwitz–Lerch zeta function
Chelo Ferreira,José L. López +1 more
TL;DR: In this article, the Hurwitz-Lerch zeta function Φ ( z, s, a ) is considered for large and small values of a ∈ C, and for large values of z ∈ N, with | Arg ( a ) | π, z ∉ [ 1, ∞ ) and s ∈ c.
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An Asymptotic Expansion of the Double Gamma Function
Chelo Ferreira,José L. López +1 more
TL;DR: The Barnes double gamma function G(z) is considered for large argument z and a new integral representation is obtained for logG(z), resulting in an asymptotic expansion in decreasing powers of z and uniformly valid for |Argz|<@p.
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Incomplete gamma functions for large values of their variables
TL;DR: Four complementary asymptotic expansions are derived which approximate the incomplete gamma functions @C(a,z) and @c(a-z) for large values of their variables a and z with simpler structure than other expansions previously given in the literature.
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Asymptotic Expansions of Generalized Stieltjes Transforms of Algebraically Decaying Functions
José L. López,Chelo Ferreira +1 more
TL;DR: In this article, asymptotic expansions of the Stieltjes and GST transforms of functions having an asymptic expansion in negative rational powers of their variable have been exhaustively investigated.
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New method to estimate the sample size for calculation of a proportion assuming binomial distribution.
TL;DR: This work simulated an iterative sampling procedure and proposed an algorithm based on Wilson Score method that provides similar values for the sample size than empirically obtained by simulation.